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2026-09-11 - 14:12
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Fri Sep 11, 2026 01:02:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2593199220209,9cyclictest0-21swapper/2919:20:2522
2593199220209,9cyclictest0-21swapper/2919:20:2422
2593299208195,8cyclictest0-21swapper/3022:42:4024
2593299208195,8cyclictest0-21swapper/3022:42:3924
2591999206196,5cyclictest3542-21CPU11
2591999206196,5cyclictest3542-21CPU11
2590699206201,2cyclictest0-21swapper/720:01:5337
2593499203192,7cyclictest0-21swapper/3221:40:3226
2593499203192,7cyclictest0-21swapper/3221:40:3126
2592799198179,17cyclictest0-21swapper/2519:41:0818
2592799198179,17cyclictest0-21swapper/2519:41:0818
2590399197175,19cyclictest0-21swapper/423:05:0034
2590399197175,19cyclictest0-21swapper/423:05:0034
2593799196190,4cyclictest142450irq/46-eno1-TxRx-420:35:1528
2593799196190,4cyclictest142450irq/46-eno1-TxRx-420:35:1528
2593799196186,8cyclictest3535-21qemu-system-x8620:05:0028
2591999195188,5cyclictest0-21swapper/1921:11:2411
2591999195188,5cyclictest0-21swapper/1921:11:2411
2591999195187,5cyclictest2462-21CPU11
2591999195187,5cyclictest2462-21CPU11
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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